Ralf Rangnick is set to replace Solskjaer as the club's manager until the end of the season and his first task will be trying to give United value for money on the vast investment they have made in the transfer market.
According to transfermarkt.co.uk, United's net spend since the summer of 2017 is huge £479.6m , boosted by their signings of Jadon Sancho, Raphael Varane and Cristiano Ronaldo in the most recent transfer window.
Harry Maguire's £80million move is also part of that whopping transfer bill, but results on the pitch have not backed up that investment.
Manchester City are next in the Premier League net spend league, as they have a net spend of £458.6million during a five year period that has seen Pep Guardiola's side win domestic league and cup trophies, while also reaching last season's Champions League final.
The big winners in the spending stakes are Chelsea and Liverpool, with both clubs winning trophies and running a prudent financial balance sheet.
Liverpool's owners have been accused to failing to back manager Jurgen Klopp with big money to spend in the transfer market and the figures back up that accusation as Liverpool have spent just £156.7million (an average of just £31.3million a year) during a period when the club has won the Champions League and Premier League titles.
By contrast, Arsenal have a net spend of £334.9million during a disappointing period in the club's history, with West Ham, Wolves, Tottenham, Everton and Brighton all spending more than Liverpool.
Chelsea have also been successful in the transfer market, with huge profit on sales of fringe players and academy graduates bolstering their transfer kitty over a five-year period when they have a net spend of £240.3million (average £48million a year).
"The people who bought the club when I went to Chelsea are very intelligent and they have built a successful business model that is sustainable," former Chelsea star Joe Cole told sundayworld.com.
"They use the academy system to produce players that are either good enough to play in the first team like Mason Mount, or they sell them and fund new signings.
"The people in charge of Chelsea have found a way of winning trophies and funding new players all at once, so you have to give them credit for how they do it."
Rangnick's arrival at Manchester United offers the potential for a change of direction in their recruitment policy, with his success in building a profitable transfer strategy at RB Leipzig a model Old Trafford chiefs would like to replicate in Manchester.